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38 True/False questions

  1. List the advantages of Click ABR?- Doesn't give you any lows

    - Clicks are based on the best threshold in 2000-4000 Hz.

          

  2. True or False: AAA do NOT recommend Aided Soundfield measures as a verification measurement.- The HAs will think the tones are noise.

    - Never use Behavioral thresholds to fit HAs

    - Not taking ear canal acoustics into account

    - If testing at loud levels, compression could kick in

          

  3. RETSPL- Reference equivalent threshold sound pressure levels

    - What SPL each transducer needs at each freq. to be calibrated to 0 dB HL

          

  4. 2cc coupler gain + head diffraction/microphone effects for instrument being fitted + RECDREAG

          

  5. List the pros for aided sound field measures.- The HAs will think the tones are noise.

    - Never use Behavioral thresholds to fit HAs

    - Not taking ear canal acoustics into account

    - If testing at loud levels, compression could kick in

          

  6. Aided SII (speech intelligibility index)- Binaural fittings unless contraindicated
    - Programmable aids
    - Minimum of 2 year warranty
    - Soft ear mold materials (silicone)

          

  7. Children <12 months show largest what?RECD, the bigger the RECD, the greater chance of oversimplification

          

  8. What consideration factors are taken into account for DSL by AGE?RECD and ear canal response

          

  9. Never EVER EVER fit based on...2000-4000 Hz



    ABR clicks.


    Minimum Click at 500 Hz, and then try to get 2000 and 4000 Hz to continue to work on the fitting.

          

  10. Can you base binaural HA fitting on sound field MRL?No because it's not ear specific; only getting one ear. Could potentially get too much lows or highs.

          

  11. Speech mapping can be done through____Test boxes

          

  12. AAA recommends using probe mic measures with ______RECD

          

  13. If you can't get probe mic measures, use _____Speech stimuli

          

  14. Who do you use DSL and NAL for?DSL: children
    NAL: adults

          

  15. Is there a minimum age for fitting HAs?-The only thing that checks for auditory neuropathy.

    - Clean waveform and easy to interpret.

          

  16. RESR =- Reference equivalent threshold sound pressure levels

    - What SPL each transducer needs at each freq. to be calibrated to 0 dB HL

          

  17. Why is Pedi Amp an issue as compared to Adult amp?DSL: children
    NAL: adults

          

  18. 2cc coupler is the average _____BTEs

          

  19. RECDdifference in output of HA between the real ear and 2-cc coupler. Comparison of exact same signal of the 2cc coupler and the signal measured in the canal

          

  20. Real-Ear: HL to SPLdB eHL obtained + RETSPL + RECD = dB SPL

          

  21. If you fit based on Click ABR...-The only thing that checks for auditory neuropathy.

    - Clean waveform and easy to interpret.

          

  22. List disadvantages of Click ABR-The only thing that checks for auditory neuropathy.

    - Clean waveform and easy to interpret.

          

  23. List the cons for aided sound field measures.• More helpful for counseling

    • Good cross-check

          

  24. You should NOT fit with ABR information IF ____________ is in question.neurologic status

          

  25. REDDReal ear to dial difference

    -Difference in SPL in ear vs. dial on the audiometer

          

  26. Validation measures can include...Ear canal length

    -Ear canal occluded volume

    -ME impedance

    -Earmold acoustics

    -Head & body diffraction effects

          

  27. What type of options would you want to include on the HA?- FM compatible battery door (HA is FM compatible or DAI)
    - Tamper proof (age dependent)
    - Pedi earhook
    - Water-resistant HAs
    - Flexibility of having on omni/directional
    - Turn off volume control buttons

          

  28. Differences in RECD2cc coupler SSPL90 +RECD

          

  29. Probe mic measures• Do not require behavioral (voluntary) responses

    • Directly measures real-ear output levels across freqs.

    • Can make predictions based on ear canal levels for amplified speech across freqs.

    • Takes less time than behavioral measures

    • Tests at more "real-life" intensities

    • Realize the kid must still be calm; have several things to distract

          

  30. Correction Factors• 500: 15-20 dB
    • All other freqs.: 10 dB
    • nHL - correction factor = eHL

          

  31. If the child's developmental age is < 6 months, ____RECD

          

  32. HH 2 Coupler is used for _____adult size ear canal

          

  33. What is the GOAL for DSL?To provide children with amplified speech that is consistently audible, comfortable, and undistorted across the frequency spectrum. Flexible in what intensity reference is used.

          

  34. ABR Tone Burst• Confirming behavioral responses if child's developmental age is <6 months
    500 Hz; more freq. specific
    • Argument for slope of click-evoked wave V latency-intensity function tells configuration of the loss

          

  35. Make sure you cross ABR with other _______ to ensure accuracy.• More helpful for counseling

    • Good cross-check

          

  36. What type of HA is used most on kids?BTE because compatibility for FM systems, they having growing ears (easier to switch out the ear molds), durable, and better retention.

          

  37. Validationdifference in output of HA between the real ear and 2-cc coupler. Comparison of exact same signal of the 2cc coupler and the signal measured in the canal

          

  38. List the HA characteristics for Kids.-The only thing that checks for auditory neuropathy.

    - Clean waveform and easy to interpret.